DE19606695A1 - Lightweight, stable base for electrophotographic photoreceptor - Google Patents

Description

The present invention relates to a base body for a electrophotographic photoreceptor used as an image-forming Part in an electrophotographic facility such as a Printer or a copying machine, can be used, and one electrophotographic photoreceptor containing such Base body includes. The present invention relates to furthermore a method for producing the base body.

So far, electrophotographic photoreceptors have become general using cylindrical base bodies from a Prepared aluminum alloy. The base body had to go through Cutting a cylindrical material of aluminum alloy to a predetermined length and high Dimensional accuracy are formed. In addition, one had to Circumferential surface of the base body are reworked to predetermined areas of surface unevenness and smoothness to reach. Since the base body contains aluminum, it follows further disadvantage that the peripheral surface of the body for Oxidizing tends to deteriorate due to the fact that Surface moisture and oxygen in the atmosphere is exposed. Consequently, the base body must be anodized Aluminum or treated with chemicals to make a Avoid changing its properties. That kind of The disadvantage of chemical treatment is an increase in Manufacturing costs.

To solve the above disadvantages, for example Japanese patent application with publication number 17026/1990 a method for producing a base body for a photoreceptor made by injection molding is formed in which a material with a polyphenyl sulfide (PPS) resin is used as the base.  

In recent years, however, electrophotographic photoreceptor with one comparatively small diameter to miniaturize the electrophotographic device, to improve it Print speed, etc. required. Consequently, the Speed of rotation of the photoreceptor to a level to be lifted, that for printing or copying with a Speed as with the previously known facilities is sufficient, which results in frequent use of the Photoreceptor as led. Therefore the photoreceptor should be like this be prepared to light with a high Speed and with excellent durability appeals to frequent use.

Consequently, one skilled in the art will need one Base body with a diameter of several hundred Micrometers and a thickness of several hundred micrometers up to several millimeters. However, it is for the Injection molding technology hardly possible, due to such requirements of technical and economic reasons.

The invention is based on the general object Base body for use in an electrophotographic Photoreceptor and a method for its cost-effective Manufacture and easy processing compared to to provide a known one. The base body has one thin wall with large diameter and great length with high dimensional accuracy. Furthermore, the Base body excellent properties in terms of light weight, less Surface deterioration in atmospheric air, one high mechanical strength, adequate Surface roughness, resistance to tension or Distortion at high temperatures, resistance to organic solvents, high conductivity, etc. which are all essentially stable over time.  

It is another object of the present invention to provide a to provide electrophotographic photoreceptor which the includes the above-mentioned base body and a photosensitive Has layer on a surface of the base body.

It is another object of the present invention Process for the production of the new base body to provide.

In the following an advantageous embodiment of the Invention based on the figures enclosed in the drawing explained in more detail.

Show it:

Fig. 1 is a cross section through an electrophotographic photoreceptor of the present invention; and

Fig. Wherein Fig. 2A represent 2A and 2B are cross-sections through a base body for the photoreceptor of the present invention, a longitudinal section and 2B a cross section along a line XX of Fig. 2A.

According to the present invention, FIG. 1 shows an electrophotographic photoreceptor 10 with a base body 1 . A base layer 2 and a light-sensitive layer 3 are applied on top of one another. According to the figure, the photoreceptor 10 is of a type with functionally distinguishable regions, ie a charge-generating layer 4 with a charge-generating substance and a charge-transporting layer 5 with a charge-transporting substance which are contained in the light-sensitive layer 3 . However, the present invention is not limited to such a type, but can also be adapted to types with both substances in a single layer structure. Furthermore, the base layer 2 can optionally, if necessary, be applied to the base body 1 , even if this is not always necessary.

According to FIG. 2A and 2B comprises a base body 1 of the electrophotographic photoreceptor 10 according to the present invention, a substrate 6 in the form of a cylinder and an outer layer 7 made of a thermosetting resin or plastics with a conductive fine powder. The cover layer 7 is applied to a peripheral surface of the substrate 6 .

The cylindrical substrate 6 is formed from a fiber-reinforced plastic (FRP). The FRP mainly consists of glass fibers or carbon fibers, a thermosetting resin or plastic of the addition reaction type, and conductive small particles. In the FRP, the thermosetting resin with the conductive fine particles is dispersed or dispersed through the bulk of fibers. The cylindrical substrate 6 has an outer diameter of 20 mm to 100 mm and a radial thickness of 0.5 mm to 5 mm. In addition, the thickness of the cover layer 7 is between 40 μm and 100 μm, preferably between 50 μm and 70 μm.

The cylindrical substrate 6 based on the FRP can be produced using a thread winding (FW) method or a continuous pultrusion method, both methods are known and are described, for example, in the Japanese technical book with the title "Plastic Kako Gÿutsu Binran", pages 275-281 and 416 -420 of 1988, published by Nikkan Kogyo Shinbunsha. These methods have advantages over other conventional methods in that a cylindrical substrate having a high conductivity can be easily formed, the substrate necessarily containing a highly viscous resin as a result of adding a large amount of carbon black as will be described below.

The amount of fiber material in the FRP ranges between 40 and 80 parts by weight, preferably between 50 and 70 parts by weight. If a lot of fibrous material is contained in the FRP, the substrate 6 shows a high strength and high elasticity, but a low coefficient of thermal expansion. Accordingly, a thin-walled cylindrical base body or a long cylindrical base body with a large diameter can be manufactured by using the fiber-rich FRP.

For the above thermosetting resin or plastic an unsaturated polyester resin or an epoxy resin are preferably used. However, others can Resins are used.

If carbon fibers are used as the fiber material in the conductive FRP, the electrical resistance of the substrate 6 is further reduced, while both strength and elastic coefficient increase at the same time. As a result, there is a high restoring force on the substrate 6 , which is sufficient to improve the condition of distortion or distortion.

The base body of the present invention will continue preferably carbon black or a metal powder as a conductive fine Powder used. The amount of the conductive fine powder corresponds to a volume resistance of the conductive FRP of 10⁴ Ω × cm or less, preferably a range of 10¹ Ω × cm up to 10² Ω × cm. Soot is used as a conductive fine powder used, its share is in the range between 15 and 25 Parts by weight. By adding the conductive fine Powder to the thermosetting resin results uniform electrical resistance in radial and Axial direction of the cylindrical substrate due to the thermosetting resin, which by the glass fibers or the Carbon fibers is distributed.  

Furthermore, it is desirable to add calcium carbonate or clay as an inorganic filler to the conductive FRP. For a preferred use of clay, a typical example is kaolinite (kaolin clay) of Al₂O₂ × 2SiO₂ × 2H₂O, in which water of crystallization is essentially dried in an oven by applying heat. By adding such an inorganic filler to the conductive FRP, a uniform conductivity and an improved mechanical strength of the cylindrical base body 1 are consequently obtained while at the same time reducing costs.

In the base body of the present invention, a peripheral surface of the cylindrical substrate 6 is formed of the conductive FRP and is ground and then provided with a thermosetting resin containing a conductive powder as a cover layer 7 . The conductive resin may be the same as the thermosetting resin in the conductive FRP. The thickness of the cover layer is in the range between 40 μm and 100 μm.

An example of a manufacturing process for the base body for use in an electrophotographic photoreceptor according to the present invention is as follows described.

The base body is made by a method with the following Steps Made: Cutting the Substrate from the above-mentioned conductive FRP with a predetermined length, Grinding a peripheral surface of the substrate up to a predetermined dimensional accuracy and one predetermined surface unevenness and application of the above-mentioned conductive resin on the reworked Surface of the cylindrical substrate. Previous to that However, the above method can be cylindrical Substrate easily prepared by a well known method  like the thread winding (FR) method or the Permanent pultrusion process as mentioned above.

The FW process includes the following steps: Dragging one Rough spun from glass fibers (typically 10 to 12 µm in Diameter) from a reel; Removing atmospheric Moisture by leading the roving through a Preheater, winding the roving around a mandrel after impregnating the roving with a solution of the the above-mentioned binder resin; Curing the resin in the Pre-spun by inserting the mandrel into a curing oven and removing the mandrel from the cured roving to to obtain a cylindrical shaped product.

On the other hand, this includes continuous Pultrusion process the following steps: impregnation a glass fiber roving with a solution of the above-mentioned binder resin; Inserting the roving into a Shape and pull the roving from the shape in which the Reinserted before or immediately after being removed from the mold is hardened. Before the continuous pultrusion procedure can alternatively a bundle of glass fibers from 10 to 12 µm in Diameter and about 50 microns long to form a mat below Use of silane, borane and glass raw material or the like be cured and then the glass fiber mat with a Solution of the conductive fine powder impregnated in the curable resin is included to make a cylindrical substrate from the conductive FRP through the above To obtain continuous pultrusion procedures.

An outside diameter of the intact cylindrical substrate obtained by the above-mentioned FW method or the continuous pultrusion method is out of a reasonable dimensional accuracy. Therefore, the surface of the cylindrical substrate is ground and then coated with a thin layer of the conductive resin to obtain a base body with a smooth surface with high dimensional accuracy of the outer diameter. This type of base body has an adequate surface accuracy of R _max equal to 0.2 to 1.5 µm and an adequate electrical resistance.

Accordingly, an electrophotographic photoreceptor can be used excellent properties by forming a photosensitive layer on a surface of the Base body can be obtained by one of the above Procedure is available at a relatively low cost.

The following are specific embodiments of the described the present invention.

example 1

A base body for the photoreceptor was made by the following Process prepared.

First a cylindrical substrate (about 30 mm Outside diameter and about 0.5 mm radial thickness) through the above-mentioned PW process made from the following:

• (1) 55 parts by weight of a glass fiber spun (RER 231, Nippon Ita Glass Co., Ltd.);
• (2) 20 parts by weight of an unsaturated polyester resin (TE120, Dai Nippon Ink Chemicals, Co., Ltd.);
• (3) 15 parts by weight of carbon black (Furnace Carbon BP-480, Cabot Co., Ltd.); and
• (4) 10 parts by weight of clay (SATINTONE 5, Tsuchiya kaolin Co., Ltd.).

It should be noted that the composition ratio of the present example with that of other examples and Comparative examples in Table 1 below is compared.

The above cylindrical substrate was cut to a length of 300 mm, and then the peripheral surface was ground down to about 30 mm by known grinders. In addition, both ends of the cylindrical substrate were further processed to form lowered areas (reference numeral 8 in FIG. 2A) on the inner peripheral surface accordingly. Furthermore, a coating solution of a conductive resin was formed on the outer peripheral surface of the cylindrical substrate to form a layer of 50 µm in thickness by dip coating. Thereby, a base body with an electrophotographic photoreceptor was obtained. In this example, the coating solution of the conductive resin was prepared by dispersing and dissolving 50 parts by weight of an unsaturated polyester, 15 parts by weight of carbon black and 35 parts by weight of clay in a mixture of ethyl acetate and acetone (1: 1).

The physical properties of the base body like Volume resistance, surface roughness, roundness and Dimensional accuracy of the outer diameter was determined by known methods according to the Japanese industry standard (JIS) measured. Furthermore, a change in dimension of the Base body measured after this heat treatment below 120 ° C for 48 hours as a heat test or after immersion in a solution of methyl chloride for 2 hours as Resistance test against an organic solvent was exposed. The results are listed in Table 2.

Furthermore, the formability of each sample was determined visual inspection found.  

The results of the decision were made as follows:
"good" if the sample had a pearlescent surface without any markings;
"almost good" if the sample had a less pearlescent surface without any marking;
"not good" if the sample had a non-pearlescent surface with markings; and
"worse" if the sample was difficult to detach from the mold.

Example 2

A base body for the photoreceptor was made as follows Process manufactured.

First, a cylindrical substrate (about 30 mm in Outside diameter and about 0.5 mm radial thickness) through the the above pultrusion method from the following Materials made:

• (1) 55 parts by weight of a continuous glass fiber mat (REM 360-G5, Nippon Ita Glass Co., Ltd.);
• (2) 20 parts by weight of an unsaturated polyester resin (TE120, Dai Nippon Ink Chemicals Co., Ltd.);
• (3) 15 parts by weight of carbon black (Furnace Carbon BP-480, Cabot Co., Ltd.); and
• (4) 10 parts by weight of clay (SATINTONE 5, Tsuchiya kaolin Co., Ltd.).

The above cylindrical substrate was made to 300 mm in length was shortened and a peripheral surface was cut to approximately 30 mm known grinding devices ground. In addition, were both ends of the cylindrical substrate further processed to Formation of lowered areas corresponding to one Inner circumferential surface. Furthermore, a coating solution made of conductive resin on the outer peripheral surface of the cylindrical substrate to form a 50 µm thick layer applied by dip coating, creating a base body of an electrophotographic photoreceptor was obtained. In this example, the coating solution of the conductive resin in the same way and with the same Composition like that prepared in Example 1. Farther the physical properties of the base body in measured the same way as in Example 1 and the results listed in Table 2.

Example 3

A base body of an electrophotographic photoreceptor was prepared in the same way as in Example 1 except for the following composition:

• (1) 50 parts by weight of a glass fiber spun (RER 231, Nippon Ita Glass Co., Ltd.);
• (2) 15 parts by weight of an unsaturated polyester resin (TE120, Dai Nippon Ink Chemicals, Co., Ltd.);
• (3) 25 parts by weight of carbon black (Furnace Carbon BP-480, Cabot Co., Ltd.); and
• (4) 10 parts by weight of clay (SATINTONE 5, Tsuchiya kaolin Co., Ltd.).

The physical properties of the base body were in measured in the same way as in Example 1 and are in the Table 2 listed.

Example 4

A basic body for an electrophotographic Photoreceptor was in the same manner as in Example 1 to prepared for the following composition:

• (1) 40 parts by weight of a glass fiber spun (RER 231, Nippon Ita Glass Co., Ltd.);
• (2) 30 parts by weight of an unsaturated polyester resin (TE120, Dai Nippon Ink Chemicals, Co., Ltd.),
• (3) 15 parts by weight of carbon black (Furnace Carbon BP-480, Cabot Co., Ltd.); and
• (4) 15 parts by weight of clay (SATINTONE 5, Tsuchiya kaolin Co., Ltd.).

The physical properties of the base body were in measured in the same way as in Example 1 and are in Table 2 listed.

Example 5

A base body of an electrophotographic photoreceptor was carried out in the same manner as in Example 1 with the exception of Supplying clay and the following composition prepared:

• (1) 80 parts by weight of a glass fiber spun (RER 231, Nippon Ita Glass Co., Ltd.);  
• (2) 10 parts by weight of an unsaturated polyester resin (Epi coat 828, Shell petroleum Co., Ltd.); and
• (3) 10 parts by weight of carbon black (Furnace Carbon BP-480, Cabot Co., Ltd.).

The physical properties of the base body were in measured in the same way as in Example 1 and are in Table 2 listed.

Example 6

A base body for an electrophotographic photoreceptor was in the same way as in Example 1 except for Use of an epoxy resin instead of the unsaturated one Polyester and the following composition prepared:

• (1) 55 parts by weight of a glass fiber roving (RER 231, Nippon Ita Glass Co., Ltd.);
• (2) 20 parts by weight of an unsaturated epoxy resin (TE120, Dai Nippon Ink Chemicals, Co., Ltd.);
• (3) 15 parts by weight of carbon black (Furnace Carbon BP-480, Cabot Co., Ltd.); and
• (4) 10 parts by weight of clay (SATINTONE 5, Tsuchiya kaolin Co., Ltd.).

The physical properties of the base body were in measured in the same way as in Example 1 and are in Table 2 listed.

Comparative Example 1

A basic body for electrophotographic photoreceptor was carried out in the same manner as in Example 1 with the exception of prepared the following composition:

• (1) 35 parts by weight of a glass fiber roving (RER 231, Nippon Ita Glass Co., Ltd.);
• (2) 30 parts by weight of an unsaturated polyester resin (TE120, Dai Nippon Ink Chemicals, Co., Ltd.);
• (3) 15 parts by weight of carbon black (Furnace Carbon BP-480, Cabot Co., Ltd.); and
• (4) 20 parts by weight of clay (SATINTONE 5, Tsuchiya kaolin Co., Ltd.).

The physical properties of the base body were in measured in the same way as in Example 1 and are in Table 2 listed.

Comparative Example 2

A basic body for electrophotographic photoreceptor was in the same manner as that of Example 1 except that Omission of clay and the following composition prepared:

• (1) 85 parts by weight of a glass fiber roving (RER 231, Nippon Ita Glass Co., Ltd.);
• (2) 10 parts by weight of an unsaturated polyester resin (TE120, Dai Nippon Ink Chemicals, Co., Ltd.); and
• (3) 5 parts by weight of carbon black (Furnace Carbon BP-480, Cabot Co., Ltd.).

The physical properties of the base body were in measured in the same way as in Example 1 and are in Table 2 listed.

Comparative Example 3

A conductive PPS (polyphenyl sulfide) resin (which contains resin a conductive component) - melting material that is commercially available by Toray Co., Ltd. under the trade name TORELINA A533X01 is available, was used to manufacture a base body for used an electrophotographic photoreceptor. The resin was made by injection molding into a base of 30 mm Outside diameter, 0.75 mm radial thickness and 300 mm length shaped.

The physical properties of this way Base body obtained were in the same manner as in Example 1 examined. The results are in Table 2 shown.

Comparative Example 4

A basic body for an electrophotographic Photoreceptor was used in the same way as for Comparative Example 3 prepared using a conductive PBT (Polybutylene terephthalate) resin (the resin contains one conductive component) - melting material, commercially available by Kai Nippon Ink Chemicals Co., Ltd. under the trade name EPC-3506, was used instead of the conductive PPS.

The physical properties of this way Base body obtained were in the same manner as in Example 1 examined. The results are in Table 2 shown.  

Table 1

Table 2

Examples 7 to 12

The photoreceptors of Examples 7 to 12 were after the following procedures are prepared, taking accordingly Base body of Examples 1 to 6 were used.

A surface of the base body was de-oiled and cleaned. Then there was a backing layer, one Charge generation layer and a charge transport layer in this order on the base body to make one Photoreceptor applied. Through dip coating first a first coating solution on a peripheral surface of the base body applied to the base layer with to form a predetermined thickness. Before dip coating was the first coating solution mentioned above Disperse 5 parts by weight of an alcohol-soluble Nylons, known under the trade name "CM8000" (Toray Industries Co., Ltd.) in 95 parts by weight of methanol prepared. Then the first coating solution was added Apply to the base body at 120 ° C for 15 minutes dried to form a layer 0.5 µm thick.

After the step to form the backing layer through Dip coating, a second coating solution was applied a surface of the base layer on the base body applied to form a charge generation layer of 0.5 µm form. In this case the second coating solution the charge generation layer by dispersing 10 Parts by weight of an X-type non-metallic phthalocyanine, known under the trade name FASTGEN BLUE 8120 (Dai Nippon Ink Chemicals, Co., Ltd.), 10 parts by weight of Vinyl chloride resin, known under the trade name MR-110 (Nippon Zeon Co., Ltd.) and by mixing with 686 Parts by weight of dichloromethane and 294 parts by weight of 1,2-dichloroethane prepared for 1 hour by a mixer. Then the solution was heated at 80 ° C for 30 minutes.  

Furthermore, the charge transport layer was on the Charge generation layer on the base body Dip coating using a third Coating solution applied. This consisted of 100 Parts by weight of a hydrazone compound (Fuji Electric Co., Ltd.), 100 parts by weight of a polycarbonate resin (Mitsubishi Gas Chemicals, Co., Ltd. Iupilon PCZ) and 800 parts by weight of dichloromethane. After performing the dip coating was applied to the charge generation layer third solution heated to one layer at 90 ° C for 1 hour 20 µm thick. In this case, the The above hydrazone compound represented by the following formula (I) being represented:

The electrophotographic properties of each photoreceptor were evaluated using a photoreceptor process testing machine (Cynthia 30HL, GENTEC Co., Ltd.). The photoreceptor was installed in the test machine and rotated at a speed of 60 mm / s. During the rotation, a surface of the photoreceptor was charged in the dark by a corotron system. In this case, a discharge voltage was regulated so that the photoreceptor surface was charged to a potential Vo of -600V. Then, the potential holding rate V _k5 (%) was estimated by measuring a potential which was obtained after 5 minutes on the photoreceptor left in the dark. Then the photoreceptor was illuminated by light with a wavelength of 780 nm and an illumination flux density of 10 µJ / cm². The remaining potential Vr was measured after the lighting.

To perform the pressure test, the photoreceptor was placed in used a commercially available laser printer. In this Case, the print quality of each copy was checked Observation of an image (e.g. letters) estimated that were transferred to a paper. The Results are shown in Table 3.

The results of the decision are as follows:
"good" if the printer prints sharp letters on paper without exception;
"not good" if the printer prints indistinct letters on the paper; and
"Bad" if the printer prints indistinguishable letters on paper.

Comparative Examples 5, 6, 7 and 8

Electrophotographic photoreceptors of the comparative examples 5, 6, 7 and 8 were made accordingly using the Base bodies of comparative examples 1, 2, 3 and 4 prepared. The process of making the photoreceptor was the same as in Example 7. The obtained ones Photoreceptors were subjected to the test according to Example 7 and the results are shown in Table 3.

As Tables 2 and 3 show, Base bodies of Examples 1 to 6 not only good ones Formability, but also excellent physical Properties. On the other hand, the base body of the Comparative Example 1 also good formability due to the small amount of glass fibers (i.e. 35 parts by weight). However, the physical properties of the Resistance to an organic solvent, the Resistance to distortion at high temperatures,  Dimensional accuracy, roundness and formability worse than in Examples 1 to 6. Consequently, one is more preferred Share of glass fibers in the base body in the range between 40 and 80 parts by weight and particularly preferably between 50 and 70 parts by weight.

Furthermore, the formability of the base body is limited Comparative example 2 worse than in examples 1 to 4. In comparative example 2, a large residual potential Vr as a result of the small amount of soot in the base body observed.

The base body according to Comparative Example 3, the under Use of PPS has been shown to be good Malleability. However, its physical Resistance to an organic Solvent and resistance to distortion at high Temperatures worse than in Examples 1 to 6.

The base body of Comparative Example 4, the under Use of PBT was not good Formability and its physical properties such as Dimensional accuracy, surface roughness, resistance towards organic solvent and resistance to Distortions at high temperature are worse than at Examples 1 to 6.

All in all, the basic bodies and the Photoreceptors of Examples 1 to 6 and 7 to 12 those of Consider comparative examples.

As a result, high print quality can be achieved by using the Photoreceptors of Examples 7 to 12 and not that Comparative examples can be obtained. Using FRP in the present invention as the material of the base body can include properties such as roundness, resistance  towards organic solvent and resistance to Distortions at high temperatures can be improved.

Table 3

Claims (29)

1. A base body ( 1 ) for an electrophotographic photoreceptor ( 10 ) characterized by :
a cylindrical substrate ( 10 ) made of a fiber reinforced plastic mainly composed of a fiber material, an addition reaction type thermosetting resin, and a conductive fine powder, and
a conductive resin layer comprising an addition reaction type thermosetting resin and a conductive fine powder which is coatable on a peripheral surface of the cylindrical substrate ( 3 ). 2. Base body for an electrophotographic Photoreceptor according to claim 1, characterized in that the fiber material from the glass fibers and carbon fibers contained group is selected. 3. Base body for an electrophotographic Photoreceptor according to claim 1, characterized in that the cylindrical substrate continues to be an inorganic one Filler from the calcium carbonate and clay contained Group contains. 4. Base body for an electrophotographic photoreceptor according to claim 1, characterized in that the thermosetting resin contained in the cylindrical substrate ( 6 ) is selected from the group consisting of unsaturated polyester resin and epoxy resin and that thermosetting resin contained in the conductive resin layer is selected from the unsaturated polyester resin and a group containing epoxy resin is selected. 5. Base body for an electrophotographic photoreceptor according to claim 1, characterized in that the conductive fine powder contained in the cylindrical substrate ( 6 ) is selected from the group consisting of carbon black powder and metal powder and that conductive fine powder contained in the conductive resin layer Carbon black powder and metal powder group is selected. 6. Base body for an electrophotographic Photoreceptor according to claim 1, characterized in that the amount of that made up of glass fiber and carbon fiber included group selected fiber material in the area between 40 and 80 parts by weight and preferably between 50 and 70 parts by weight of the fiber-reinforced Plastic is. 7. Base body for an electrophotographic Photoreceptor according to claim 1, characterized in that the volume resistance of the conductive, fiber-reinforced Plastics equal to or less than 10⁴ Ω · cm and is preferably in the range of 10¹ to 10² Ω · cm. 8. Base body for an electrophotographic photoreceptor according to claim 1, characterized in that the thermosetting resin in the coating layer applied to the peripheral surface of the cylindrical substrate ( 6 ) is identical to the resin contained in the cylindrical substrate. 9. base body for an electrophotographic photoreceptor according to claim 1, characterized in that a surface roughness R _{max of} the applied on the peripheral surface of the cylindrical substrate, conductive resin layer is in the range between 0.2 microns and 1.5 microns. 10. Electrophotographic photoreceptor, characterized by a base body ( 1 ) for an electrophotographic photoreceptor with a cylindrical substrate ( 6 ), on which a conductive resin layer ( 7 ) is applied, the cylindrical substrate being formed from a fiber-reinforced plastic, which consists mainly of a Fibrous material, an addition reaction type thermosetting resin and a conductive fine powder, and the conductive resin layer contains an addition reaction type thermosetting resin and a conductive fine powder, a photosensitive layer ( 3 , 4 , 5 ) being a charge transport material and a Has charge generation material, which layer is applied to a peripheral surface of the base body ( 6 ). 11. An electrophotographic photoreceptor according to claim 10, characterized in that it further comprises an underlayer ( 2 ) between the conductive resin layer applied on the peripheral surface of the cylindrical substrate ( 6 ) and the photosensitive layer ( 3 , 4 , 5 ). 12. Electrophotographic photoreceptor according to claim 10, characterized in that the light-sensitive layer ( 3 , 4 , 5 ) is formed from a charge transport layer ( 5 ) with a charge transport material and a charge generation layer ( 4 ) with a charge generation material. 13. An electrophotographic photoreceptor according to claim 10. characterized in that the conductive binding resin further contains an inorganic filler that consists of the group containing calcium carbonate and clay is selected is.   14. An electrophotographic photoreceptor according to claim 10, characterized in that the thermosetting resin contained in the cylindrical substrate ( 6 ) consists of an unsaturated polyester resin and an epoxy resin group and the thermosetting resin contained in the conductive resin layer ( 7 ) consists of an unsaturated polyester resin and a group containing epoxy resin is selected. 15. Electrophotographic photoreceptor according to claim 10, characterized in that the conductive fine powder contained in the cylindrical substrate ( 6 ) is selected from a group consisting of carbon black powder and metal powder and in that the conductive resin layer ( 7 ) contains conductive fine powder from a Carbon black powder and metal powder group is selected. 16. An electrophotographic photoreceptor according to claim 10. characterized in that a lot of the from the Group containing glass fibers and carbon fibers selected fiber material in the range between 40 and 80 Parts by weight and preferably between 50 and 70 Parts by weight of the conductive, fiber-reinforced Plastic is. 17. An electrophotographic photoreceptor according to claim 10. characterized in that a volume resistance of fiber reinforced plastic equal to or less than 10⁴ Ω · cm and preferably in the range of 10¹ to 10² Ω · cm. 18. An electrophotographic photoreceptor according to claim 10. characterized in that in the on the Circumferential surface of the cylindrical substrate applied Coating layer contained resin identical to that is thermosetting resin.   19. Electrophotographic photoreceptor according to claim 10, characterized in that the surface roughness R _{max of} the conductive resin layer ( 7 ) applied to the peripheral surface of the cylindrical substrate is in the range between 0.2 mm and 1.5 mm. 20. A method of manufacturing an electrophotographic photoreceptor comprising the following steps:
Preparing a fiber reinforced plastic having a predetermined volume resistance by impregnating a fiber material with a predetermined amount of an addition reaction type thermosetting resin containing a conductive fine powder;
Forming a cylindrical substrate ( 6 ) by cylindrical shaping of the conductive, fiber-reinforced plastic;
Grinding a peripheral surface of the cylindrical substrate;
Applying a conductive resin layer ( 7 ) on the peripheral surface of the cylindrical substrate; and
Finishing a surface of the conductive resin layer coated on the peripheral surface of the cylindrical substrate to produce a predetermined surface roughness. 21. A method for producing an electrophotographic photoreceptor according to claim 20, characterized in that the cylindrical substrate ( 6 ) is formed by using a thread winding technique. 22. A method for producing an electrophotographic photoreceptor according to claim 20, characterized in that the cylindrical substrate ( 6 ) is manufactured using a permanent drawing technique. 23. A method for producing an electrophotographic photoreceptor according to claim 20, characterized in that the cylindrical substrate ( 6 ) further contains an inorganic filler selected from a group containing calcium carbonate and clay. 24. Method of making an electrophotographic Photoreceptor according to claim 20, characterized in that the thermosetting resin from an unsaturated Group containing polyester resin and an epoxy resin is selected. 25. Method of making an electrophotographic Photoreceptor according to claim 20, characterized in that the conductive fine powder from a carbon black powder and Group containing metal powder is selected. 26. Process for producing an electrophotographic Photoreceptor according to claim 20, characterized in that a lot of that from the glass fiber and carbon fiber contained group selected fiber material between 40 and 80 parts by weight, preferably between 50 and 70 Parts by weight of the fiber-reinforced plastic. 27. Method of making an electrophotographic Photoreceptor according to claim 20, characterized in that a volume resistance of the conductive, fiber reinforced plastic equal to or less than 10⁴ Ω · cm and preferably in the range of 10¹ to 10² Ω · cm is. 28. Method of making an electrophotographic Photoreceptor according to claim 20, characterized in that that's in the peripheral surface of the cylindrical substrate  applied coating layer contained conductive Resin is identical to the thermosetting resin. 29. A method for producing an electrophotographic photoreceptor according to claim 20, characterized in that a surface roughness R _{max of} the conductive resin layer applied to the peripheral surface of the cylindrical substrate is between 0.2 mm and 0.5 mm.